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RZ3A48D75 – RZ 75A 480V DC IP
Carlo Gavazzi RZ3A48D75 solid state relay, a three-phase 75 A zero-cross switching relay designed for industrial automation and AC load control applications.
£231.93
Why Choose the Carlo Gavazzi RZ3A48D75 Solid State Relay?
The Carlo Gavazzi RZ3A48D75 is a high-performance three-phase solid state relay (SSR) designed for reliable switching of industrial AC loads including heating elements, motors and process equipment. As part of the advanced Carlo Gavazzi RZ3A solid state relay series, it provides dependable semiconductor switching technology for demanding automation and power control applications.
This panel-mounted SSR delivers efficient and silent switching while eliminating the mechanical wear associated with traditional contactors and electromechanical relays. The RZ3A48D75 uses zero-cross switching technology to reduce electrical interference and improve operational reliability in industrial control systems.
With a rated current of 75 A AC, a 42–530 V AC operating voltage range and a 4–32 V DC control input, the RZ3A48D75 is ideal for high-power three-phase applications such as industrial heating, plastic processing machinery and automated production equipment.
Key Advantages
- High-performance three-phase solid state relay for industrial applications.
- 75 A AC rated current for high-power load switching.
- Zero-cross switching technology reduces electrical noise during operation.
- 4–32 V DC control input enables compatibility with PLCs and automation controllers.
- Integrated overvoltage protection for improved reliability.
- Robust panel mounting design for industrial control cabinets.
Key Features
- Carlo Gavazzi RZ3A solid state relay series.
- Three-pole AC solid state switching.
- Zero-cross switching mode.
- 75 A AC-51 rated operational current.
- 20 A AC-53a rated operational current.
- 42–530 V AC operating voltage range.
- 4–32 V DC control voltage.
- Built-in overvoltage protection.
- Screw terminals with captive clamp connections.
Reliable Solid State Switching for Industrial Automation
Solid state relays such as the Carlo Gavazzi RZ3A48D75 provide fast, silent and reliable switching of electrical loads using semiconductor technology. This allows industrial systems to achieve improved reliability compared with traditional mechanical switching devices.
The RZ3A series is designed for automation engineers, machine builders and industrial equipment manufacturers requiring dependable three-phase load control. Its compact panel-mounted design and robust switching performance make it suitable for integration into modern industrial systems.
Typical Applications
- Industrial heating systems and electrical ovens.
- Plastic extrusion and processing machinery.
- Thermoforming and moulding equipment.
- Packaging and production machinery.
- Dryers and climate control systems.
- Industrial automation and process control equipment.
Technical Specifications
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| Device Type | Solid State Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Switching Current (A) | 75 A | |
| Mounting Type | Panel | |
| Coil / Supply Voltage | 12 V DC, 24 V DC, 5 V DC | |
| Manufacturer | Carlo Gavazzi | |
| Series | RZ3A Solid State Relays | |
| Model | RZ3A48D75 | |
| Product type | Three-phase solid state relay | |
| Switching mode | Zero cross switching | |
| Number of poles | 3 | |
| Rated operational current AC-51 | 75 A | |
| Rated operational current AC-53a | 20 A | |
| Operating voltage | 42–530 V AC | |
| Control voltage | 4–32 V DC | |
| Operating frequency | 45–65 Hz | |
| Power connection | Screw terminals with captive clamp | |
| Mounting type | Panel mounting | |
| Protection | Built-in overvoltage protection | |
| Dimensions | Approx. 103 × 73.5 × 47.6 mm | |
| Weight | Approx. 380 g |
Frequently Asked Questions
What is the Carlo Gavazzi RZ3A48D75 used for?
This solid state relay is used for switching three-phase AC loads in industrial automation, heating and process control applications.
What current rating does the RZ3A48D75 support?
The relay supports a rated operational current of 75 A AC for AC-51 applications.
What control voltage is required?
The RZ3A48D75 operates with a 4–32 V DC control input, allowing connection to industrial controllers and PLC outputs.
What switching method does this relay use?
The relay uses zero-cross switching technology to provide reliable switching with reduced electrical interference.
Where is this solid state relay installed?
The RZ3A48D75 is designed for panel mounting inside industrial control cabinets and automation systems.
Trusted by Industrial Automation Engineers Worldwide
Carlo Gavazzi RZ3A solid state relays are trusted by automation engineers and machine builders for reliable three-phase load switching, efficient operation and long service life in demanding industrial environments.
